AN ANALYSIS OF A FRICTION DAMPED SYSTEM USING TWO COMPONENT MODE METHODS

摘要

Herein, two component mode methods are employed to in-vestigate the forced dynamics of a cantilevered beam with anattached exible friction damper. The rst, traditional modalanalysis, uses the free vibration modes of the unconstrainedbeam, while the second, a component mode synthesis approach,uses an alternative set of modes which connes the friction non-linearity to a single component mode. The convergence andeciency of the two methods are compared for a particular case,and the component mode synthesis approach is found to con-verge at least as fast as, and usually faster than, the traditionalmodal analysis approach. Further analysis of the beam systemis conducted and discussed using the component mode synthesisformulation.